what is the usage of &$ ?

[yonghan]

Hi all,i found out a code like this

while ($column = $meta->fetch_field())
{
$bindVarArray[] = &$results[$column->name];
} 

I don't know what is the usage of & in front of $results for..Thanks a lot...

[Jordan]

You are assigning that array value by reference.

PHP: Spotting References - Manual

[John]

This is very useful if you are passing large arrays. If you do not pass the array by reference, you are creating another copy of the array in memory.

[yonghan]

Ok guys...Thanks a lot..